html, body {
    height: 100%;
}

ul {
    padding: 0;
    margin: 0;
    list-style: none;
}

.main-container {
    width: 1000px;
    min-height: 100%;

    margin-left: auto;
    margin-right: auto;

}

/*----------------------- 导航栏 ------------------------*/
.main-nav {
    overflow: hidden;
    /*background-color: rgba(0, 0, 0, 0.62);*/
    background-color: #242424;
}

/*----------------- logo ---------------*/
.main-nav .logo {
    display: inline-block;

    padding-top: 1em;
    padding-bottom: 1em;
    margin-left: 25px;

    /*background-color: #f7d543;*/

    /*width: 140px;*/

    /*text-align: center;*/
}

.main-nav .logo > a {
    font-size: 23px;
    font-weight: 700;
    text-decoration: none;
    color: white;
}

.main-nav .logo > a > .heart-image {
    color: red;
}

/*----------------- 选项 ----------------*/
.main-nav .nav-list {
    float: right;
    margin-right: 100px;
}

.main-nav .nav-list > li {
    display: inline-block;
    padding: 1.3em 1em 1em 1em;
}

.main-nav .nav-list > li.active > a {
    color: #ff3728;
}

.main-nav .nav-list > li > a {
    color: #b6b6b6;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1em;
}

/*-------------------------- 通用标题 ---------------------*/
.common-label {
    margin-top: 40px;
    margin-bottom: 40px;
    text-align: center;
}

.common-label .line {
    height: 2px;
    background-color: #f1f1f1;
    position: relative;
    top: 27px;
    z-index: -10;
}

.common-label .common-title {
    font-size: 35px;
    font-weight: bolder;
}

.common-label .common-title > span {
    padding: 0 18px;
    background-color: white;
}